Graded oxygenation device for fire grate

Abstract

The utility model discloses a fire grate grading oxygenation device which comprises an air blower, an air supply outlet of the air blower is respectively connected with a plurality of air boxes (2) with upward openings through a plurality of air pipes (1), a door body (3) is arranged at the bottom of each air box (2), one side of each door body (3) is hinged to the corresponding air box (2), and a first elastic element is arranged between one side of each door body (3) and the corresponding air box (2). The first elastic element provides upward rotating torsion for the door body (3), a lock hook mechanism is arranged between the other side of the door body (3) and the air bellow (2), and a second elastic element (4) is arranged on the lock hook mechanism. One side of the door body (3) is connected with the door body (3) through a spring hinge (5), and the first elastic element is a torsional spring arranged in the spring hinge (5). The utility model has the advantage of low failure rate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of garbage incinerator, especially relates to a garbage incinerator grate grading oxygen increasing device. BACKGROUND

[0002] In the grate furnace, the grate is obliquely arranged and located at the bottom of the hearth, the bottom of the grate is a slagging auger, the garbage moves from the upper end of the grate to the lower end of the grate, and the incineration is completed in the moving process, part of the ash produced by the incineration falls from the grate and is collected to the slagging auger and transported to the fixed area.

[0003] The garbage experiences different states at different positions of the grate, the initial state is drying, then the main combustion state, and finally the burning-out state, and is discharged. The amount of combustion-supporting oxygen required by the garbage when passing through different positions of the grate is different, therefore, the grading oxygen increasing device is arranged below the grate to blow different amounts of air to different positions of the grate.

[0004] The existing grading oxygen increasing device comprises a blower, a blowing port of the blower is connected to a plurality of air boxes with upward openings through a plurality of air pipes, and the plurality of air boxes are arranged and fixed at the bottom of the grate. The airflow generated by the blower enters the air boxes through the air pipes to make the inside of the air boxes high-pressure, passes through the grate upwardly, and fully contacts the garbage to supplement the oxygen required for the garbage incineration. Valves can be arranged on the air pipes to adjust the air supply amount of the corresponding air pipe and play a matching role. The total air volume of the blower is distributed to each air pipe as required to realize grading oxygen increasing.

[0005] Since the ash falls on the grate, the ash is collected in the air box and gradually accumulates to fill the air box, resulting in blockage of the air pipe, therefore, a door body driven by a motor to open is arranged on the air box, a worker remotely operates the door body to open, and the ash in the air box falls to the slagging auger. However, the working condition below the grate is poor, there is a large amount of corrosive dust, and the temperature is as high as several hundred degrees, which causes the motor to be prone to failure, and the failure rate of the grading oxygen increasing device is low. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a grate grading oxygen increasing device.

[0007] The utility model discloses a grate grading oxygen increasing device, including the blower, the blowing port of the blower is connected to a plurality of air boxes with upward openings through a plurality of air pipes, the bottom of the air box is equipped with the door body, one side of the door body is hinged with the air box, and the first elastic element is arranged between the other side of the door body and the air box.

[0008] The one side of the door body is connected with the door body through a spring hinge, and the first elastic element is a torsion spring arranged in the spring hinge.

[0009] The spring hinge is arranged in the interior of the air bellow, one side of the spring hinge is provided with fireproof cloth, one end of the fireproof cloth is connected with the interior of the air bellow, and the other end of the fireproof cloth is connected with the door body.

[0010] The side wall of the air bellow is provided with a groove extending to the bottom of the air bellow, the lock hook mechanism comprises a wedge-shaped lock head arranged at the bottom of the door body, a rotating rod arranged in the groove is arranged on the lock head, the rotating rod is connected with the air bellow through a rotating shaft, and the second elastic element is a U-shaped spring sheet arranged between the rotating rod and the air bellow and above the rotating shaft.

[0011] The rotating rod is provided with a positioning block arranged below the rotating shaft.

[0012] The air outlet end of the air pipe extends into the air bellow and is bent downward to send air.

[0013] The top surface of the air bellow is a slope.

[0014] Compared with the prior art, the present application is improved on the basis of the existing grading oxygen increasing device, and the main improvements include the following:

[0015] 1) One side of the door body is rotatably connected with the air bellow and provided with a first elastic element, and a lock hook mechanism is arranged between the other side of the door body and the air bellow, when a certain amount of ash is accumulated in the air bellow, the lock hook mechanism can be automatically opened, the door body is rotated downward to discharge the ash, then the door plate is rotated by the elastic force of the first elastic element, the lock hook mechanism is re-locked, the bottom of the air bellow is closed, the air blowing direction of the air bellow is upward, the oxygen increasing effect is good, and the failure rate of the grading oxygen increasing device is reduced due to the fact that the lock hook mechanism does not contain electrical elements and has good corrosion resistance and high temperature resistance.

[0016] 2) The fireproof cloth is arranged in the air bellow, the spring hinge is covered by the fireproof cloth, the rotation of the door body is smooth, and the failure rate of the grading oxygen increasing device is further reduced.

[0017] Therefore, the present application has the advantages of low failure rate. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a front view of the present application.

[0019] Figure 2It is the left view schematic drawing of the utility model.

[0020] Figure 3 It is the front view of prior grate.

[0021] The marks in the drawing are: 1 - air pipe, 2 - air bellow, 3 - door body, 4 - second elastic element, 5 - spring hinge, 6 - fireproof cloth, 7 - recess, 8 - lock head, 9 - rotating rod, 10 - rotating shaft, 11 - positioning block. DETAILED DESCRIPTION

[0022] The utility model will be further explained in connection with the drawings and examples, but it is not as the basis for limiting the utility model.

[0023] Example. Grate grading oxygenation device, as shown in figure, including air blower, the air supply opening of air blower is connected multiple air bellow 2 of opening upward through multiple air pipes 1, the bottom of air bellow 2 is equipped with door body 3, is equipped with valve on air pipe 1, the gas flow of air pipe 1 is adjusted through valve, multiple air bellow 2 array arrangement is fixed in the bottom of grate, the characteristics are as follows: Figure 1

[0024] The side of door body 3 is hinged with air bellow 2, and a first elastic element is arranged between the side of door body 3 and air bellow 2, the first elastic element provides a torsional force for the upward rotation of door body 3, and a locking hook mechanism is arranged between the other side of door body 3 and air bellow 2, and a second elastic element 4 is arranged on the locking hook mechanism.

[0025] The side of door body 3 is connected to door body 3 through a spring hinge 5, and the first elastic element is a torsional spring arranged in the spring hinge 5.

[0026] The spring hinge 5 is located in the interior of the air bellow 2, one side of the spring hinge 5 is provided with a fireproof cloth 6, one end of the fireproof cloth 6 is connected to the interior of the air bellow 2, and the other end of the fireproof cloth 6 is connected to the door body 3. The heat-resistant temperature of the fireproof cloth 6 should exceed 500 DEG C, and the fireproof cloth 6 is in a relaxed state when the door body 3 is closed. The spring hinge 5 is arranged in the interior of the air bellow 2 to enable adjacent air bellows 2 to be installed more closely.

[0027] A recess 7 is arranged on the side wall of the air bellow 2, and the recess 7 extends to the bottom of the air bellow 2; the locking hook mechanism comprises a wedge-shaped lock head 8, the lock head 8 is located at the bottom of the door body 3, a rotating rod 9 is arranged on the lock head 8 and extends into the recess 7, and the rotating rod 9 is connected to the air bellow 2 through a rotating shaft 10; the second elastic element 4 is a U-shaped spring sheet, the second elastic element 4 is located between the rotating rod 9 and the air bellow 2, and the second elastic element 4 is located above the rotating shaft 10. The recess 7 is arranged to avoid interference with the action of the locking hook mechanism when two air bellows 2 are fixed to the grate by being close to each other.

[0028] ​The rotating rod 9 is provided with a positioning block 11 below the rotating shaft 10.

[0029] The air outlet end of the air pipe 1 extends into the air box 2 and is bent downward to blow air.

[0030] The top surface of the air box 2 is inclined, which is matched with the inclined grate, facilitates installation, and the inclination angle of the inclined surface depends on the inclination angle of the grate.

[0031] Working principle: as shown in the figure, Figure 1 The falling ash on the grate enters the air box 2, and the ash cannot enter the air pipe 1 due to the downward air blowing direction of the air pipe 1, thereby avoiding the blockage of the air pipe 1 and reducing the maintenance frequency. The ash includes high-density ash and low-density ash, the high-density ash includes stones and metal elements, and the low-density ash includes fly ash, etc. Under the action of the airflow of the air pipe 1, the low-density substances are lifted upward and return to the upper part of the grate along the airflow, so that the air box 2 mainly stores high-density ash, and the number of dust flying when the ash falls from the air box 2 to the ash removal auger is reduced, which helps to keep the workshop clean.

[0032] The accumulation of the ash in the air box 2 forms a downward F1 force on the right side of the door body 3. The spring hinge 5 gives the door body 3 a torsional force for upward rotation, and forms an upward F2 force on the right side of the door body 3. The second elastic element 4 gives the right side of the door body 3 an upward F3 force through the rotating rod 9 and the lock head 8. In the initial state, F1 < F2 + F3, the door body 3 remains in the closed state, and as the amount of ash increases, when F1 > F2 + F3, the door body 3 pushes away the lock head 8, and since the right side of the door body 3 loses the support of the lock head 8, a larger acceleration is obtained, the right side of the door body 3 rapidly moves downward, the ash in the air box 2 falls, F1 rapidly decreases to close to zero, the spring hinge 5 makes the door body 3 re-rotate upward, the elastic force of the spring hinge 5 overcomes the elastic force of the second elastic element 4, and the right side of the door body 3 re-returns to the upper part of the lock head 8, and the door body 3 is re-closed. In the whole process, the door body 3 is quickly opened and quickly closed, thereby reducing the influence on the oxygenation effect.

[0033] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

Claims

1. A grate grading oxygen increasing device, comprising a blower, a blowing port of the blower is connected with a plurality of air boxes (2) with opening upward through a plurality of air pipes (1), the bottom of the air box (2) is provided with a door body (3), characterized in that: One side of the door body (3) is hinged to the air bellow (2), and a first elastic element is arranged between the door body (3) and the air bellow (2), which gives the door body (3) a torsion force for upward rotation, and a locking hook mechanism is arranged between the other side of the door body (3) and the air bellow (2), and a second elastic element (4) is arranged on the locking mechanism.

2. The grate fractional oxygenation device according to claim 1, characterized in that: One side of the door body (3) is connected to the door body (3) through a spring hinge (5), and the first elastic element is a torsion spring arranged in the spring hinge (5).

3. The grate staged oxygen enhancement device of claim 2, wherein: The spring hinge (5) is located inside the air bellow (2), one side of the spring hinge (5) is provided with fireproof cloth (6), one end of the fireproof cloth (6) is connected to the inside of the air bellow (2), and the other end of the fireproof cloth (6) is connected to the door body (3).

4. The grate staged oxygen enhancement device of claim 1, wherein: The side wall of the air bellow (2) is provided with a groove (7) extending to the bottom of the air bellow (2); the locking hook mechanism comprises a wedge-shaped lock head (8) located at the bottom of the door body (3), the lock head (8) is provided with a rotating rod (9) extending into the groove (7), and the rotating rod (9) is connected to the air bellow (2) through a rotating shaft (10); the second elastic element (4) is a U-shaped spring sheet, the second elastic element (4) is located between the rotating rod (9) and the air bellow (2), and the second elastic element (4) is located above the rotating shaft (10).

5. The grate fractional oxygenation device according to claim 4, characterized in that: The rotating rod (9) is provided with a positioning block (11) located below the rotating shaft (10).

6. The grate staged oxygen enhancement device of claim 1, wherein: The air outlet end of the air pipe (1) extends into the air bellow (2) and is bent downward to supply air.

7. The grate staged oxygen enhancement device of claim 1, wherein: The top surface of the air bellow (2) is inclined.

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